Purpose: If the horizontal plane is inconsistent between computer tomography (CT) couch and line accelerator (LA) couch, the position of the isocenter point in the radiotherapy treatment planning system (TPS) should deviate from that of it on the accelerator couch board. Then, the actual dose distribution was different from the radiotherapy plan we designed in TPS. This paper introduces a method to evaluate the dose deviation caused by the tilt of CT couch. Methods: We calculated the isocenter points of the position coordinates both in CT couch and LA couch, and compared the dose distribution when the twopositions of isocenter points were applied in radiotherapy plan independently in TPS. The dose distribution difference of a breast radiotherapyplan was analyzed as a demonstration with this method. Results: The distance between the two isocenter positions increased with angle of CT couch. The tilt of the couch had an impact on the dose distribution, especially in larynx's maximum dose parameter. Conclusion: This method could quantitatively analyze the dose distribution deviationcaused by the tilt of CT couch plate. The results can provide a valuable suggestion for clinical medical strategy.
| DOI | 10.11648/j.rst.20200603.11 |
| Published in | Radiation Science and Technology (Volume 6, Issue 3, September 2020) |
| Page(s) | 27-31 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2024. Published by Science Publishing Group |
CT Couch, Line Accelerator Couch, Treatment Planning System, Isocenter Point
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APA Style
Yang Bo, Zhang Jing, Li Lei, Liu Xiaolong, Pang Haowen. (2020). An Analysis Method of Dose Error Caused by the Couch Tilt of CT Simulation Machine. Radiation Science and Technology, 6(3), 27-31. https://doi.org/10.11648/j.rst.20200603.11
ACS Style
Yang Bo; Zhang Jing; Li Lei; Liu Xiaolong; Pang Haowen. An Analysis Method of Dose Error Caused by the Couch Tilt of CT Simulation Machine. Radiat. Sci. Technol. 2020, 6(3), 27-31. doi: 10.11648/j.rst.20200603.11
AMA Style
Yang Bo, Zhang Jing, Li Lei, Liu Xiaolong, Pang Haowen. An Analysis Method of Dose Error Caused by the Couch Tilt of CT Simulation Machine. Radiat Sci Technol. 2020;6(3):27-31. doi: 10.11648/j.rst.20200603.11
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Download@article{10.11648/j.rst.20200603.11,
author = {Yang Bo and Zhang Jing and Li Lei and Liu Xiaolong and Pang Haowen},
title = {An Analysis Method of Dose Error Caused by the Couch Tilt of CT Simulation Machine},
journal = {Radiation Science and Technology},
volume = {6},
number = {3},
pages = {27-31},
doi = {10.11648/j.rst.20200603.11},
url = {https://doi.org/10.11648/j.rst.20200603.11},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.rst.20200603.11},
abstract = {Purpose: If the horizontal plane is inconsistent between computer tomography (CT) couch and line accelerator (LA) couch, the position of the isocenter point in the radiotherapy treatment planning system (TPS) should deviate from that of it on the accelerator couch board. Then, the actual dose distribution was different from the radiotherapy plan we designed in TPS. This paper introduces a method to evaluate the dose deviation caused by the tilt of CT couch. Methods: We calculated the isocenter points of the position coordinates both in CT couch and LA couch, and compared the dose distribution when the twopositions of isocenter points were applied in radiotherapy plan independently in TPS. The dose distribution difference of a breast radiotherapyplan was analyzed as a demonstration with this method. Results: The distance between the two isocenter positions increased with angle of CT couch. The tilt of the couch had an impact on the dose distribution, especially in larynx's maximum dose parameter. Conclusion: This method could quantitatively analyze the dose distribution deviationcaused by the tilt of CT couch plate. The results can provide a valuable suggestion for clinical medical strategy.},
year = {2020}
}
TY - JOUR T1 - An Analysis Method of Dose Error Caused by the Couch Tilt of CT Simulation Machine AU - Yang Bo AU - Zhang Jing AU - Li Lei AU - Liu Xiaolong AU - Pang Haowen Y1 - 2020/09/10 PY - 2020 N1 - https://doi.org/10.11648/j.rst.20200603.11 DO - 10.11648/j.rst.20200603.11 T2 - Radiation Science and Technology JF - Radiation Science and Technology JO - Radiation Science and Technology SP - 27 EP - 31 PB - Science Publishing Group SN - 2575-5943 UR - https://doi.org/10.11648/j.rst.20200603.11 AB - Purpose: If the horizontal plane is inconsistent between computer tomography (CT) couch and line accelerator (LA) couch, the position of the isocenter point in the radiotherapy treatment planning system (TPS) should deviate from that of it on the accelerator couch board. Then, the actual dose distribution was different from the radiotherapy plan we designed in TPS. This paper introduces a method to evaluate the dose deviation caused by the tilt of CT couch. Methods: We calculated the isocenter points of the position coordinates both in CT couch and LA couch, and compared the dose distribution when the twopositions of isocenter points were applied in radiotherapy plan independently in TPS. The dose distribution difference of a breast radiotherapyplan was analyzed as a demonstration with this method. Results: The distance between the two isocenter positions increased with angle of CT couch. The tilt of the couch had an impact on the dose distribution, especially in larynx's maximum dose parameter. Conclusion: This method could quantitatively analyze the dose distribution deviationcaused by the tilt of CT couch plate. The results can provide a valuable suggestion for clinical medical strategy. VL - 6 IS - 3 ER -
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